User blog comment:Exampasdjfka;g/Blaziken EVs/@comment-31267872-20180102020618

You can keep "EV training" once your Pokémon have reached maximum EVs, it will have no effect, however.

However, I believe Pokémon can still get EVs if they are not full on EVs but are max-leveled.

You can put up to 252 EVs in one stat. You have 508 EVs to use, meaning if you wanted to max-out two stats, you could, with an extra 4 EVs left. Only every 4 EVs counts as one stat point.

For your nature, you put in characteristic. I am guessing your Blaziken would be Timid nature based off of that, but it's pure background knowledge.

If you want to work on a moveset, you can using Move Relearner or TMs. Do you also know the exact EVs (only works if you've EV trained to a set amount you know, or you have Advanced Stat Viewer)? If you don't, you can give a general overview using the hexagon thing.

If your EVs are not how you'd like them, you can go to the Colosseum Marketplace to buy some EV Resets which will reset all your EVs in one stat area.